diff --git a/requirements.txt b/requirements.txt
index 433f3de..27c7498 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,39 +10,38 @@ certifi==2018.10.15       # via requests
 chardet==3.0.4            # via requests
 click==7.0                # via pip-tools
 decorator==4.3.0          # via ipython, traitlets
-django-anymail==4.2
-django-constance==2.3.1
-django-debug-toolbar==1.10.1
-django-environ==0.4.5
-django-modeltranslation==0.13b1
-django-phonenumber-field==2.1.0
-django-picklefield==1.1.0
-django-rosetta==0.9.0
-django-widget-tweaks==1.4.3
-django==2.1.3
-gunicorn==19.9.0
+django-anymail==4.2       # via -r requirements.in
+django-constance==2.3.1   # via -r requirements.in
+django-debug-toolbar==1.10.1  # via -r requirements.in
+django-environ==0.4.5     # via -r requirements.in
+django-modeltranslation==0.13b1  # via -r requirements.in
+django-phonenumber-field==2.1.0  # via -r requirements.in
+django-picklefield==1.1.0  # via -r requirements.in
+django-rosetta==0.9.0     # via -r requirements.in
+django-widget-tweaks==1.4.3  # via -r requirements.in
+django==2.2.13            # via -r requirements.in, django-anymail, django-debug-toolbar, django-phonenumber-field, django-rosetta
+gunicorn==19.9.0          # via -r requirements.in
 idna==2.7                 # via requests
-ipdb==0.11
+ipdb==0.11                # via -r requirements.in
 ipython-genutils==0.2.0   # via traitlets
-ipython==7.1.1
+ipython==7.1.1            # via -r requirements.in, ipdb
 jedi==0.13.1              # via ipython
 parso==0.3.1              # via jedi
 pexpect==4.6.0            # via ipython
-phonenumbers==8.10.0
+phonenumbers==8.10.0      # via -r requirements.in
 pickleshare==0.7.5        # via ipython
-pillow==5.3.0
-pip-tools==3.1.0
+pillow==5.3.0             # via -r requirements.in
+pip-tools==3.1.0          # via -r requirements.in
 polib==1.1.0              # via django-rosetta
 prompt-toolkit==2.0.7     # via ipython
-psycopg2==2.7.6.1
+psycopg2==2.7.6.1         # via -r requirements.in
 ptyprocess==0.6.0         # via pexpect
 pygments==2.2.0           # via ipython
 pytz==2018.7              # via babel, django
-raven==6.9.0
+raven==6.9.0              # via -r requirements.in
 requests==2.20.1          # via django-anymail, django-rosetta
 six==1.11.0               # via django-anymail, django-rosetta, pip-tools, prompt-toolkit, traitlets
-sqlparse==0.2.4           # via django-debug-toolbar
+sqlparse==0.2.4           # via django, django-debug-toolbar
 traitlets==4.3.2          # via ipython
 urllib3==1.24.1           # via requests
 wcwidth==0.1.7            # via prompt-toolkit
-git+https://github.com/liqpay/sdk-python#egg=liqpay